Cartronix CTX-3418 | Antenna adapter cable with phantom power | Din to ISO

Are you replacing the original radio in a Volkswagen, Audi, or SEAT from model year 1997–2001? Then you will often notice that the new aftermarket radio no longer has any reception. This is because these vehicles use an active antenna that requires power via so-called phantom power.

The Cartronix CTX-3418 has been specifically developed to solve this problem. This adapter cable ensures that your original antenna continues to function correctly – with enhanced reception and a seamless transition from ISO to DIN.

Why choose the CTX-3418?

✔ Solution for dropped reception – Ideal for radio replacement
✔ For cars with an active antenna (phantom powered) – Power the antenna via the blue wire
✔ ISO to DIN – Enables the transition from the original antenna system to the DIN standard
✔ Simple Plug & Play installation – No cutting or soldering required

Typical applications

• Installation of an Android or CarPlay radio in a Volkswagen, Audi, or SEAT from 1997–2001
• Resolving poor radio reception after replacing the original head unit
• Connection of ISO antenna system to aftermarket radio with DIN
• Retention of original AM/FM functions with active antenna

Compatibility

The Cartronix CTX-3418 is universally applicable in vehicles with a ISO antenna connector and an active antenna (phantom power). This mainly occurs with:

• Volkswagen: Golf 3/4, Polo, Passat, Lupo, Sharan, Bora
• Audi: A3, A4, A6, TT (up to model year 2001)
• SEAT: Ibiza, Leon, Toledo, Cordoba (1997–2001)

Check your system beforehand to ensure compatibility.

Technical specifications

• Article code: CTX-3418
• Connection: ISO female → DIN male
• Power supply: 12V phantom power via blue wire (ACC or ANT connector)
• Support: AM and FM radio
• Length: approx. 30 cm
• Compatible with: Aftermarket radios of any brand

Package contents

• 1x Cartronix CTX-3418 antenna adapter cable with phantom power

Why choose the Cartronix CTX-3418?

In older VAG models, antennas are often powered directly via the original radio. As soon as you replace this with a modern system without phantom power, the antenna simply stops working. The CTX-3418 restores that functionality and ensures crystal-clear reception – without the hassle and without compromise.